muy yum 

meaning highly delicious. muy backwards is yum.

background: mexican cartoon from the 60's. actually i made it up.

this ice cream is muy yum.

muy yum by OMG 1337! October 10, 2004

muy bien marijuana 

Spanish; lit. very good marijuana.
for when the weed is goood
or Mexican, or from a Mexican dealer.

You got me that ganja, boy? Gimme some of that muy bien marijuana, man!

muy bien marijuana by Myiuki tweakin June 15, 2007

Muy Gato 

Awsome, Amazing, Gnarly, The best in the world, Cool, Extreme,

Guatemala is muy gato!

Muy Gato by Rikki David April 30, 2009

muy-muy 

pigeon slang for go to bed

"go brush your teeth before you go muy-muy"

muy-muy by anexika August 22, 2006

muy dope 

"muy" means "very" in spanish...
so muy dope means "very dope"

That dude is muy dope, he's shredding up the mountain on his skiis.

muy dope by John Bonar January 22, 2009

¡Muy chulo! 

This is a mainland Spanish expression that means - "Extremely chilled"

Mire al vestido de Armani - "¡Muy chulo!"

¡Muy chulo! by Infamous Academy July 31, 2013

muy caja 

Colombian slang, specifically from Medellin, it means that something is really funny, it always goes with the adverb "muy" before "caja", but sometimes you might find it as "tan caja" when describing that someone is being really funny right now.

Someone says a joke.
Me: Ese man es muy caja! // That guy is so funny!

Alternatively.
Me: Que man tan caja! // Such a funny dude!

My friend Deyker trips on the street in front of everybody, humiliating himself and making me laugh so hard.
Tomorrow at school:
-La caida de Deyker ayer fue muy caja!

muy caja by Salvares April 4, 2021